20320250345113 has 4 divisors (see below), whose sum is σ = 20320417134388. Its totient is φ = 20320083555840.

The previous prime is 20320250345053. The next prime is 20320250345147. The reversal of 20320250345113 is 31154305202302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5593475692809 + 14726774652304 = 2365053^2 + 3837548^2 .

It is a cyclic number.

It is not a de Polignac number, because 20320250345113 - 2¹³ = 20320250336921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20320250345173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83211756 + ... + 83455597.

It is an arithmetic number, because the mean of its divisors is an integer number (5080104283597).

Almost surely, 2^{20320250345113} is an apocalyptic number.

It is an amenable number.

20320250345113 is a deficient number, since it is larger than the sum of its proper divisors (166789275).

20320250345113 is a wasteful number, since it uses less digits than its factorization.

20320250345113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166789274.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 20320250345113 its reverse (31154305202302), we get a palindrome (51474555547415).

The spelling of 20320250345113 in words is "twenty trillion, three hundred twenty billion, two hundred fifty million, three hundred forty-five thousand, one hundred thirteen".